CVE-2023-24494 : Exploit Details and Defense Strategies

This CVE-2023-24494 involves a stored cross-site scripting (XSS) vulnerability found in Tenable.sc. It occurs due to improper validation of user-supplied input before returning it to users. An authenticated, remote attacker can take advantage of this vulnerability by persuading a user to click on a specially crafted URL, leading to the execution of arbitrary script code in the user's browser session.

Understanding CVE-2023-24494

This section will delve into what CVE-2023-24494 entails and its potential impact.

What is CVE-2023-24494?

CVE-2023-24494 is a stored cross-site scripting (XSS) vulnerability that affects Tenable.sc. This vulnerability arises from the lack of proper validation of user-supplied input, enabling attackers to execute malicious script code in a victim's browser session.

The Impact of CVE-2023-24494

The impact of this vulnerability is significant as it allows authenticated, remote attackers to manipulate user interactions on Tenable.sc, potentially leading to unauthorized access, data theft, or further exploitation of the affected system.

Technical Details of CVE-2023-24494

In this section, we will explore the technical aspects of CVE-2023-24494, including the vulnerability description, affected systems and versions, and the exploitation mechanism.

Vulnerability Description

The vulnerability in Tenable.sc stems from the failure to adequately validate user input, resulting in the execution of malicious script code within a user's browsing session. Attackers can leverage this flaw to perform cross-site scripting attacks and compromise the security and integrity of the system.

Affected Systems and Versions

Tenable.sc versions 5.23.1 and earlier are confirmed to be impacted by CVE-2023-24494. Users utilizing these versions are at risk of falling prey to the stored XSS vulnerability unless appropriate remediation measures are taken.

Exploitation Mechanism

To exploit CVE-2023-24494, attackers must first gain authenticated access to Tenable.sc. Subsequently, they can entice users into clicking on a specially crafted URL that contains malicious script code. Upon executing the script within the victim's browser session, attackers can carry out various malicious activities.

Mitigation and Prevention

Mitigating the risks associated with CVE-2023-24494 requires immediate action as well as long-term security practices to safeguard systems against similar vulnerabilities.

Immediate Steps to Take

Users of Tenable.sc should apply security best practices such as enforcing strict input validation, security headers, and content security policies to mitigate the risk of XSS attacks. Additionally, raising awareness among users about the importance of cautious browsing habits can help prevent falling victim to such exploits.

Long-Term Security Practices

In the long term, organizations should prioritize regular security assessments, proactive monitoring for vulnerabilities, timely patching of software, and ongoing security awareness training to strengthen their overall security posture and prevent future XSS vulnerabilities.

Patching and Updates

It is crucial for users of Tenable.sc to stay informed about security updates and patches released by the vendor to address CVE-2023-24494. Applying these patches promptly and keeping systems up to date with the latest security measures is essential in preventing exploitation and securing sensitive data.